My own plugins for Munin

This small repository contains some tiny plugins (written in Bash or Python), for the Munin monitoring tool.

Despite a very rich plugin collection, I found some that could be missing to someone (well, at least to me), so I decided to write them. See below for a list of the plugins I wrote (tiny, and probably bugged), and how to install them.

How to install them?

1. First clone the repo

In a classic Ubuntu or Debian Linux environment, with Munin correctly installed with the default folder configuration, the following commands will git clone my repository:

cd ~/.local/etc/munin/    # A certain directory, you can use some place else
git clone https://github.com/Naereen/My-Munin-plugins ./My-Munin-plugins.git/  # Clone my repo
cd ./My-Munin-plugins.git/  # Go to this directory

2. Then install or activate the plugins you want

Then, pick the plugins you like in this folder, and install them or activate them.

For instance, if you want to intall the plugin number_of_plugins.sh, then in the good folder (see step 1) do:

# Be sure it is executable
chmod 755 number_of_plugins.sh  # By default they should all be executable
# Then symlink it to /etc/munin/plugins/
sudo ln -s ${PWD}/number_of_plugins.sh /etc/munin/plugins/nb_of_plugins

You can (and should) then check that the plugin works:

$ munin-run nb_of_plugins  # Gives the number of plugin currently activated
plugins.value 34
myplugins.value 5

You can repeat these two steps for every plugins you want to install.

Note: you can also use the provided Makefile to install one or all plugins:

make install__tmux  # Ask for sudo password and install tmux.sh to /etc/munin/plugins/tmux
make install_all    # Ask for sudo password and install all my plugins to /etc/munin/plugins/

List of plugins

Number of open tabs, windows and panes in tmux ? Done, see tmux.sh, it works but works even better if user is well configured (see below).
Number of open graphical programs and open windows in your window manager ? Done, see gui_windows.sh, it works only if user is well configured (see below).
Number of open tabs, windows and panes in Sublime Text 3 ? It was harder... I created this tiny ST3 plugin (number_tabs.py, to install in your Packages/User directory), in order to have a ST3 command number_tabs. Then the script number_st3_tabs.sh calls it with subl --background --command number_tabs from the command line... FIXME do it better?
Number of documents and number of pages printed by my laptop ? In progress, see nb_printed_documents.sh. FIXME Should already be available from this list!
Number of channels, users, groups and active users for a Slack team ? Done with this Python file that accesses the Slack API and this Bash file that prints the config or values.

Required configuration

Edit your munin-node configuration file to specify the configuration.

Currently, tmux.sh and gui_windows.sh need to be ran from the user $USER (ie, you) and not munin:

[tmux]
user lilian   # adapt to your own username

[gui_windows]
user lilian   # adapt to your own username

Some screenshots

Tmux

On the main page:
On the page for this plugin (with the legend and information on the plots):

GUI Windows

On the main page:

Munin plugins

On the main page:
On the page for this plugin (with the legend and information on the plots):

Slack stats

On the main page:

Wishlist for future plugins ?

I would like to be able to use Munin to monitor:

~~Number of songs played from morning and number of songs currently in the waiting list, for my music player GMusicBrowser ? (by @squentin)~~ It seems impossible... (I explored the cli API of GMusicBrowser and it seems unachievable)
~~Number of open tabs and windows in Firefox ?~~ It seems impossible...
Volume of the main sound card? Seems possible. But useless?
Number of USB peripherics connected? Completely useless.
Local weather, or temperature of my home?
... And you, do you have any other idea?

📓 References ?

For more details on Munin, see the official website, www.munin-monitoring.org, and the documentation, guide.munin-monitoring.org.
A good introductory page is plugin/writing.html on the new Munin guide.
Fore more details on Munin plugins, see first this page (wiki/plugins), then the reference, and if needed the older pages PluginShell, or PluginConcise or HowToWritePlugins on the Munin wiki.

Other self-quantified projects ?

uLogMe: keep track of your computer activity throughout the day: visualize your active window titles and the number and frequency of keystrokes, in beautiful and responsive HTML timelines.
selfspy: log everything you do on the computer, for statistics, future reference and all-around fun. I also worked a little bit on selfspy-vis, some tools to visualize the data collected by selfspy.
My minimalist dashboard, generated every hour (with a crontab file), with this bash script GenerateStatsMarkdown.sh.